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To: bugs@httpd.apache.org
Subject: [Bug 61891] New: infinitive loop of AH01323: Purge of LDAP cache
 failed
Date: Mon, 11 Dec 2017 15:19:18 +0000
Message-ID: <bug-61891-7868@https.bz.apache.org/bugzilla/>
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archived-at: Mon, 11 Dec 2017 15:19:25 -0000

https://bz.apache.org/bugzilla/show_bug.cgi?id=3D61891

            Bug ID: 61891
           Summary: infinitive loop of AH01323: Purge of LDAP cache failed
           Product: Apache httpd-2
           Version: 2.4.27
          Hardware: All
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: mod_ldap
          Assignee: bugs@httpd.apache.org
          Reporter: hendrik.harms@gmail.com
  Target Milestone: ---

Sometimes I see the error "AH01323: Purge of LDAP cache failed" repeated ma=
ny
times. Only restarting the HTTPD could stop it.

After some investigation I think the marktime set when the cache is 3/4 ful=
l is
the problem:=20
If we have a cache with a short TTL-time many entries are renewed before the
maxentries are reached. If the purge-run could only delete less than 1/4 of=
 the
entries (cause more than 1/2 are renewed meanwhile) we don't pass the place
where the marktime is set again. After this we could not add any new item i=
nto
the cache. Any try to add an item will cause the error "AH01323: Purge of L=
DAP
cache failed".

--=20
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